Lace-making machine.



P. HOLZRIGHTER.

LACE MAKING MACHINE.

APPLICATION FILED APR.11, 1912.

Patented 0015.22, 1912.

2 SHEETS-SHEET 1.

iuLUMlllA PLANOGRAPH c0.. WASHINGTON, D c.

Patented Oct. 22, 1912.

2 SHEETS-SHEET 2.

F. HOLZRIGHTER.

LACE MAKING MACHINE.

APPLICATION FILED APR.11, 1912.

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UNITED STATES PATENT OFEIGE.

FERDINAND I-IOLZRICI-ITER, OF BARMEN, GERMANY, ASSIGNOR TO BAR-TELS,DIERICI-IS & 00., G-ESELLSGI-IAFT MIT BESGHRANKTEB I-IAFTUNG, OFBARIVIEN, GERMANY, A.

CORPORATION OF GERMANY.

LACE-MAKING MACHINE.

Specification of Letters Patent. Pgfl gntgd (2 22,1912,

Application filed April 11, 1912. Serial No. 690,153.

To all whom it may concern:

Be it known that I, FERDINAND HOLZ- RICHTER, a citizen of the Empire ofGermany, and residing at Barmen, Germany, have invented certain new anduseful Improvements in Lace-Making Machines, of which the following is aspecification.

My invention relates to lace-making machines comprising a number ofheads or plates arranged in a closed circle among which thebobbin-carriers are driven in tracks by means of drivers rotating belowthe heads or plates, the course of the bobbins being regulated accordingto the pattern of lace to be made by temporarily stopping thebobbin-carriers. In these lace-making ma chines, in which the number ofbobbins is equal to the number of heads or plates, it is well-known tostop and guide the bobbincarriers at each crossing in the track in frontof the truncated point with the aid of an inlet able to be adjusted bythe patterngear. Now according to my invention I group a plurality ofinlets about one common center to form a star-shaped wheel, and I mountthis wheel revolubly at each crossing behind the truncated point locatedin the direction of rotation of the driving gearwheels, so that in therest position it always has one of its inlets or recesses facing theopen side of the crossing. In the rest position of the wheel thebobbincarrier drivers drive the bobbin-carrier into the inlet or recessand leave it behind here; thewheel is, however, rotated part of arevolution by blades axially displaceable on the hubs of the drivinggear-wheels when these blades are lifted a corresponding height by thejacquard pattern-gear, the partial rotation taking place toward the oneor the other wheel according as the blades of the one or the otherdriving gearwheel are lifted. The partial rotation starts the stoppedbobbin-carrier working on to one or other of the adjoining heads orplates depending on the direction of rotation. By means of thisarrangement the stoppage and guidance of the bobbincarriers isdistributed at each crossing among a number of inlets or recesses, thewear and tear of the individual parts is correspondingly diminished and,consequently, the life of the machine is considerably increased. Thebackward motion of the inlet for the reception of the nextbobbin-carrier is obviated because during the partial rotation the nextinlet in the wheel occupies the place of the preceding one in each case.Consequently, one movement is saved. Further, as the blades which bringabout the rotation of the star wheel are located close in front of thedrivers, a relatively long time almost equal to the duration of half arevolution of the driving wheel is at disposal during which the hooks ofthe jacquard pattern-gear can be lifted for lifting the blades.

Another advantage attaching to my improved device consists in theblades, suit ably prevented from rotating on the driver hub, extendinginto the path of the drivers and forming with these vertical spaces forthe bobbin-carrier driver pins, so that when the bobbin-carriers aremoving along the track they are continuously guided and in correctmotion is completely prevented.

One illustrative embodiment of my invention is represented by way ofexample in the accompanying drawings, wherein Figure l is a top planview. the part thereof designated I showing two heads or plates of thelace-making machine with one bobbincarrier in the rest position, and thepart II showing the tracks in dotted lines, two bobbin-carriers beingabout to be set in motion. Figs. 2 and 3 are vertical sections taken onthe lines A-B and CD respectively in Fig. 1.

Referring to the drawings, the heads or plates 0 fast on the spindles aof the driving gear-wheels 7) form with the frame-plate (Z the knowntracks al at whose crossings the points f located in the direction ofrotation of the drivers are truncated, as has been known heretofore. Nowbehind this truncated point I journal a Wheel 9 provided in theillustrative embodiment, with eight recesses or inlets g, andconsequentlyof a star-shape; the rest position 1) of this star-wheel issecured by a notched wheel h rigidly connected with it and provided withas many notches as the star-wheel contains recesses, and by a lever 70pressed by a spring 2' entering into one of the notches.

The hub 7), of the driving gear-wheel 7) carries the blades 0 below thedrivers m,- t-hese blades 0 are at opposite sides of the spindle a andare axially displaceable but non-rotatable relatively to the drivers.

They are moved up and down by means of the jacquard pattern-gear in thecustomary manner through the medium of a fork p which is fast on a pin 1and engages in a groove n oft a bushing 71, carrying the blades; the pin7", pressed downward by the spring 8, is guided in the top frameplate (Zand in the botoni frame-plate Q and is lifted by the pull of the hooks.The blades 0 extend upward to close in front of the drivers m and formtherewith spaces t for the pins a (Fig. In the elevated position (Fig.3) the blades are at the elevation of the star-wheel g and engagetherewith in such manner that it is driven so far during one partialrevolution that the next recess arrives below the truncated point f.

In the rest posit-ion off the star-wheel 9 (Fig. 1) the bobbin-carriermoved by the drivers in the direction of the arrows is stopped at theslanting flanking sides of the recess blocking the track toward the twoheads or plates and is brought along these into the stationary position.On the con trary, when one of the pairs of blades f is lifted, e. g.that shown cross-hatched in Fig. 1, II, the wheel 9 is rotated part of arevolution and the bobbin-carrier a is driven from the recess in whichis was stopped to in front of the driver, as will be readily under stoodfrom Fig. 1. For transferring the bobbin-carrier in operation to theother head or plate, the pair of blades not cross-hatched is lifted anddrives the star-wheel g in the opposite direction.

I claim:

1. In a lace-making machine of the character described, the combinationwith a top frame-plate having truncated points, a bottom frame-plate,spindles mounted on the bottom frame-plate, heads or plates mounted onthe spindles and forming tracks with the top frame-plate, the tracksforming crossings opposite the truncated points, a gear-wheel having ahub on each spindle,

and a driver for bobbin-carriers driven by each hub, of a star-wheeljournaled behind each truncated point, means for arresting thestar-wheel with a recess opposite a crossing, blades displaceablymounted on each hub for rotating adjacent star-wheels, and means formoving the blades into and out of the plane of the star-wheels.

2. In a lace-making machine of the character described, the combinationwith a top frame-plate having truncated points, a bottom frame-plate,spindles mounted on the bottom frame-plate, heads or plates mounted onthe spindles and forming tracks with the top frame-plate, the tracksforming crossings opposite the truncated points, a gear-wheel having ahub on each spindle, and a driver for bobbin-carriers driven by eachhub, of a star-wheel journaled behind each truncated point, means forarresting the star-wheel with a recess opposite a crossing, bladesdisplaceably mounted on each hub for rotating adjacent starwheels, andmeans for moving the blades into and out of the plane of thestar-wheels, the blades extending into the path of the drivers andforming spaces for receiving bobbin-carriers movable in the tracks.

In testimony whereof, I ailix my signature in the presence of twowitnesses.

FERDINAND HOLZRIGHTER.

WVitnesses HELEN NUFER, ALBERT NUFER.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

